Grain-cleaning machine



Jan, v2, 1923. 1,440,726.

w. M. FARGUSON.

GRAIN CLEANING MACHINE.

FILED MAR.14.1921.

2 SHEETS-snai# 1.'

" l' ENVENWR W. IVI. FARGUSON. GRAIN CLEANING MAC'IIINE.

Jan. 2, 1923.

2 SHEETS-SHEET 2.'

man MAR. v14, 1921,.

Gd /I/ raie-.esa its. a, reas. i hdtld WILLAM Tail'. FABGUSON, 0F BRYANDCN, MANITOBA, CANADA.

GRAN-CLEANING MACHINE.

Application led 'March 14, 1921. Serial 1\To.451,986;

T @ZZ whomc't 'may concerm. i l locate an upper shoe 8 which is formed Be it known that l, W'ILLIAM M. FARGU- from side boards 9 and 10, a bottom board 55 soN, of the city of Brandon, in the lrovince `l1 and a of screens, the individual of Manitoba, Canada, have invented certain members of the gang ot screens being indi- 5 new and useful Improvements in Grain- .cated at 12, 13'` and 14. `The screens are Cleaning Machines, of which the tollowing `suitably spaced and are disposed one directly is the speciiication. y abovethe other and extend forwardly be- 60 The invention relates to improvements in vyond the forward end ot the machine as best grain cleaning machines and an object ot the shown in Fig. 5. i

invention kis to provide a comparatively To the hopper l secure a pair of straps large capacity machine which will aiiectively and 15 which extend downwardly toclean grain, separating wild oats, obnoxious .wards the upper screen but terminate clear 65 seeds, chaff, straw etc., from the good grain oi' the saine and to the lower ends of the said such as wheat. straps l attach an apron 16 such as of oil- 15 A further object of the invention is to vcloth which lies on the topI tace oi the top arrange the machine so that the separation screen, the arrangement being such that the is effected for the greater part by air blast. grain ted onto and passing over the top 70 ri :t'urther object is to construct the maA screen is; held down by theapron. The top chine in a simple, durable and easily opershoe is supported for lateral vibratory move- 20 ated manner. ment by pairs ot vt'ront and rear side springs W'ith the above more important objects iny l? and 18, 19 and 20,the springs having view the invention consists essentially in the vtheir upper and lower ends attached to the 75 arrangement and construction ott parts here beams 2 and their central portions fastened ina-iter more particularly described and later to the sides of the shoe. To the iront end pointed out in the appended claims, reterot the shoe l attach an enclosed side delivery ence b ing had to the accompanying drawchute 21 having'z an inclined bottom which ings in which reeds the material delivered to the chute 80 Figures 1 and 3 are views ot the opposite through a side discharge spout 22. i

sides o'l the machine. I Here it will benoticed that the bottom 11 Figures 2 and 4. are views of the "liront `o'l2v the shoe terminates somewhat'baclr from and rear end of the machine respectively. the forward end oi the lowermost screen 14 Fig. 5 is an enlarged vertical sectional. so that thematerial caught by the bottom 85 view longitudinally through the machine. hoard will be delivered downwardly within Fig. 6 is a horizontal sectional view the machine on to thelower shoe 23. through the machine at 6-6 Fig. 5. immediately to the rear ofthe upper shoe Fig. i' is an enlarged detailed verticalsecl and beneath thehopper l locate a tan casing tional view at 7-7 Fig. 1. 2a provided with a blast spout25 kwhich 90 y In the drawings like characters or reteropens to the rear end of the top shoe and is ence indicate ccurespondingparts in the tittedwith a ycontrolling valve 26. Within 40 several iigures. y 1 Y the' casing l mount a 'tan 27 .carried by the The 'frame or body l'o' the machine is ot ien shaft 28, thesaid shaft being suitably ordinary construction presenting the cusmounted in side bearings carried bythe sides 95 ternary corner 'legs l connected bysuitably` of the machine. Thisian' is driven as later disposed side beams or struts 2 and lcarrying explained that it will effect an air blast at the to*l a suitable hopper titled with through the spout and into theupper shoe. outlet opening 4l which is controlled by a. kHere it will be observed also that the top hinged gate 5. ln the present instance the shoe inclines downwardly. in passing. for- 100 is adjusted by the end. lever permawardlyand that the lower shoe has the ior-. nently connected to the with the point ward end. elevatedsolthat it `inclines downci connection axially aligned with the wardly in passing rearwardly. The forhinges and the lever extends over a toothed ward endet1 the lower shoe is suitably carsegment 7 secured to the end olf the hopper. riedby the forward end of the upper shoe 105 ln a location imniedately beneath thekgate and the rear end issupported 'by side bars 29 and 30 from the top shoe. According to this arrangement, when the top shoe is laterally agitated within the frame the bottom shoe moves with it, The lower shoe is of the saine construction as the upper shoe but it has only two screens 31 and 32, the material delivered over these screens being caught and discharged to the side by an end chute 3 3. rllhe material passing` through the latter screens and caught by the bottom board of the under shoe is discharged over the end of the bottom board and in a falling stream onto an inclined cross deiiecting board 34 carried by the machine frame, the deflecting board being spaced clear of the chute 33 and having the lower edge delivering on to the inclined deflecting pan 35. The rear end of the Cleflecting pan is carried by rollers 36 whilst the front end is supported by swinging arms 37 and 38 pivotally carried by the machine frame. Between the under screen and the pan l locate a second or lower fan casi-ng 39 which is provided with a rearwardly directed blast spout 4Q supplied with a controlling valve 41 and the rear end of the spout is directed towards the inclined cross'board 34 so that the blast from the fan strikes the board and passes through the stream of material falling from the lower chute.

42 is a fan within the casing 3 9, the said fan being carried by the cross shaft 43., the

ends of which are suitably mounted in the machine frame. More or less centrally of the machine in a location beneath the top shoe l locate a cross beam 44 which carries a pivot lever 45, the rear end of which is connected by a cross rod 46 to the crank of a vertically disposed crank shaft 47 suitably mounted in bearings provided on the side of the machine. rlhe forward end of the lever is pivot-ally attached to a cross bar 48 eX- tending between the side bars 29 and 30.

The above arrangement effects in the driving ofthe crank shaft the alternate lateral shifting of' the bar 43 and the consequent lateral vibratory movement of the upper and lower shoes.

49 is the'main driving shaft of the machine which has the ends suitablycarried in the sides of the machine frame and it is provided at the front side of the machine with lleysO, 5 1 and 52 and the a single pulley 53 The pulgected by a crossed driving belt cy 55 secured to the. upper end of Y u shaft. 4. driving belt i6 is connected to the pulley 50,7 this belt being driven by an enginetnot shown). The pulley 51 is connected by a crossed belt 57 to. a driving pulley 5,8 securedv to the fan shaft 28 and the pulley 50is connected by a belt 59 to a driving pulley 60 secured` to the fan shaft 43. The Shft43 is supplied with a disc or wheel lthe fans, laterally 6l similar to the pulley 60, the said pulley and wheel. being at opposite ends of the said shaft and the said wheel and pulley are both fitted with eccentric pins 62 connected by means of connecting` bars 63 to the upper ends of the levers 37 and 38.

lircm the above connections it will be apparent that by driving the shaft 49 l rotate agitate the shoes Vrand give the pan a forward and back reciprocating movement. v

lWhen the machine is working the grain to be cleaned is placed in the hopper and the gate 5 is properly set. The grain discharged onto the top shoe undergoes an initial separation effected by the combined effort of the Ascreens and the air blast from the fan 27.

rllhe material too large to pass through the screens passes over the screens into the chute 2l and the lighter material is caught in the blast from the fan and blown ahead between the screens and delivered also into the said chute.

The vmaterial initially separated in the'top shoe and caught by the board l1 is discharged by said board onto the lower shoe and here undergoes a second separation, the material which is too large to pass through the screens of the under shoe being caught and delivered to the side by the chute 33. The separated material or that passing' through the lav bernd the under shoe in a falling stream the said stream dropping for the greater part on to the deflecting board 34. The blast n n the fan 42 operating on the stream of i-.fain falling from the lower shoe9 carries any light material out of the falling stream and discharges it at the baci;A of the machine ancl in this connection l might mention that by permitting the falling stream to impinge or drop on to the inclined board 34 l give 'the blast of the fan a good chance to oper-ate effectively, as the grain is n'iomentarily arrested by the board and the air blast from the fan has a good opportunity tocatch the lighter material and sweep itvup over the upper edge of the board 34. The material delivered on to the pan 35 is accordingly cleaned grain .and it is discharged by the pau at the frontend of the machine.

ililhat if claim my invention is opl ler lateral nio ie. connecting bars of said slices. a cross oar extendii i between said connecting bars a lei mounted intermediate of its ends on a .'ertical pix/'ot and connected' at one end to said cross'bar and a verticalv shaft provided with a crank connected to the remaining end of the lever. Y

er screens is delivered by the bottom 2. A grain cleaning machine comprising j upper and lower screen shoes, a lever mounted. intermediate of its ends 011 2t vertical Signed itt Brandon this 8rd day of Jan pvot and having one end thereof pvotally nary, 1921. l

connected with both of said shoes to impart lateral movement thereto. a vertically disposed shaft provided With a crank and a link extending between said crank and the remaining end of the lever.

VILLIAM M. FARGUSON. 

